The worst thing for me - as I don't know how it actually feels to steer a real hovercraft and how they act in real life - is that she gets stuck/stranded, when you manoeuvre her up the the concrete landing platform at Portsmouth (or do I do something wrong?).
But for me she feels all right when she's on the water.
[EDIT]
I just tried to look at the difference between handling the Freedom 90 in SS08 and SSE:
For me in SS08 it's more arcade style. It is too easy to handle her, even at high speeds.
In SSE it feels more like what I imagine is the real thing. As the waves grow higher, it becomes impossible to sail her.
But as mentioned above, I haven't tried to steer a hovercraft in real life - haven't even been on it as a passenger.